Ok... all in the pusuit of speed... bought a great running B type moby (25 mph) that originally did 25ish with my fat A$$ on it. Seduced by it's french smoothness and solid ride i decided to make it my sport touring mount. So I started by at least wanting to go A spec speeds (low 30s right?) Full tune up: 27mph, full synthetic oil, new plug and timing: 28mph, install dellorto 15/15 with a 68 jet: back to 25mph, ok, rejet to a 56 with air filter: 31mph! sweet! this is still running on the original shorty intake (10mm). So, ok i am there... My friend runs a A type on a dellorto with the 68... 35mph solid! me wants!!! so i scope the difference... same bike, mine is even in better condition and tune... but what is that?! look at that curving intake, is like a bulging muscle... is got to be that! so i get one, and looking at the intake porthole and base, decide to port and polish as best as i can. It looks good, better than i thought. I install the bendy and set it up on the dellorto with the 56 jet... crap... 22mph!!! what gives? i change jets: 68... horrible low end, 20mph tops, try an in between 62 (from a pacco carb... they work, right???) absolute crap, 21mph... back on the 56... bach to 24, 25mph. I have tried every thing on the toolbox but the zippo... it idles ok, but when i crack it open, it seems like is going to rip my arms out of their sockets, then immediately bogs down and then picks up real slow... i am out of ideas, anybody wants to take a crack at it???